Lake Powell The beauty of Northern Arizona and Southern Utah has been seen by many who live here and many others who come to visit. One of the centerpieces of this beauty is the man-made product called Lake Powell. This lake was created in the 1950s with the construction of the Glen Canyon Dam. Glen Canyon then filled with water, creating what is now a reservoir that provides power to 22 million people and recreational activities that bring in more than $500 million a year. (Wilke) There are four reasons for this dam: regulating the flow of water to the Colorado River, providing energy to residents of the Southwest, water use programs in the area, and water-related recreation water sports. (Draining, 2001) Critics of this dam's existence cite examples of water loss, ecosystem damage, and long-term harmful effects on the Southwest. Lake Powell has proven to be one of the largest positive inputs in its area, these inputs far outweigh the loss it could bring. Lake Powell should be maintained as it is to improve the lives and lifestyle of the people in this area and visitors. One of the main challenges in keeping Lake Powell full is that the Sierra Club, a very powerful lobbyist in the specific area of ​​environmental impact, now wants to empty the lake. The Sierra Club and other fans have two main arguments on which they base their request. (“Glen”) The first is saving an ecosystem that is dying due to the filling of Glen Canyon; another is the loss of the beauty of the canyon and other sites of archaeological and cultural importance. The ecological claim is one that does not embrace any change. We are currently in a changing world, including the Glen Canyon area. It is true that some species of fish do not survive due to changing water temperatures in the area, but there are others that survive and grow in population. As water temperatures at the base of the dam and other dams along the Colorado have changed, the trout population in the area has grown, along with the size of the fish found in the river..